Instructions
The main reasons for such a malfunction lie in a hardware failure or software error. Checking the hardware version is very simple - check the plug on your keyboard and the connection connector. If everything is visually in order, replace the keyboard with a working one and reboot the computer. If you continue to be unable to use this device, you should check the version of the software fault.
First, try rebooting the machine. Perhaps the operating system will localize and fix the software glitch. Try reinstalling the keyboard. To do this, in the “System Properties” window of the “System” item “Control Panel”, find the “Hardware” tab. Click the "Device Manager" button. In the "Device Manager" window, select the "Keyboard" item and delete it, close the "Device Manager". Then enter the “Hardware Installation” item and run the “Setup Wizard”. Click Next and wait for the installer to detect the keyboard. The OS will indicate that the keyboard is detected and functioning by turning on the indicator light. Num Lock. If the program displays a message that the installation of new devices is complete and prompts you to reboot, then click the “No” button, since the keyboard is already functioning. Also click the “Finish” button in the “Found New Hardware Wizard” window and exit the “System Properties” menu.
One possible problem could be that the operating system does not detect required driver. To reinstall the driver, go to the website of your keyboard manufacturer, select the desired model, download the archive and unzip it. As a rule, such drivers are equipped with their own installation program, and then you should just run the file. If there is none, you will have to launch the “Device Manager”, select the “Update driver” command and specify in the mode manual search path to the directory in which the unpacked driver is located. The computer must be restarted after installation.
Often, a non-functional keyboard is a consequence of a virus program that has taken up residence in your machine. A characteristic sign of this is the failure of the mouse, as well as the touchpad. Check the system with antivirus program. Better not to rely on free utilities, promising instant success and healing of your computer. Use reputable and well-known antiviruses. The chances of success with such security are much higher.
A very real reason for a keyboard failure may also be the lack of BIOS connection. This failure is especially common on machines with a built-in keyboard. Correcting the situation can be quite simple. As your computer boots, enable the BIOS. Find the tab with a list of input and output devices. Select USB Controller and turn on Enabled. Enable the same mode for the USB Keyboard Setup item. Exit the BIOS with confirmation to save the new settings. If none of the above helped you, contact the service center.
Included with the computer. Almost all data and actions are entered using the keyboard, and any mouse movement will provide a key combination. Therefore, a keyboard failure after booting the system threatens, at a minimum, with difficulties typing text information...
Windows is loaded, but the keyboard does not respond to your commands. There are only two reasons, hardware and software. Moreover, the first one occurs much more often, and is solved by simply replacing faulty equipment.
Checking the keyboard
To check the hardware, that is, the keyboard itself, you only need a known working input device. To start, do visual inspection computer connectors (USB or PS/2), as well as the cable and connector of your keyboard.
In case of USB connection The connector suffers, where the contacts can come loose and cause the computer to short out. With a PS/2 connector, on the contrary, more often the defect occurs in the plug in which the contact legs are bent or broken off. If the inspection shows that there are no deviations, then we try to connect the prepared keyboard.
Be sure to completely turn off the computer and then disconnect the existing keyboard to replace it. It is better if the second keyboard is of the same connection type, this will help localize the problem. If the device behaves similarly after loading Windows, then you should look for the reason in the software.
Checking the driver
Software means the required set of drivers, which should determine your hardware. If the driver is installed incorrectly or is incompatible with the operating system, you should reinstall the keyboard or install a new version of the driver.
In Windows OS, we go to “Device Manager”, where we find the keyboard (depending on the connection type). Right-click and select “Delete” from the context. Next, it is enough to restart the computer so that the system finds and installs the equipment (or use the Connect New Equipment Wizard).
In case you need to update the driver, go to the Internet. On the manufacturer's official website we find the downloads section, where we find the name of your device model. Download installation file for your operating system, and then install by double clicking.
Non-standard reasons
If all of the above did not help in your situation, then you should check your BIOS settings. One of the sections is responsible for the functioning of input devices. Usually, this option is possible with manual intervention, and if this was not the case, then you can limit your actions.
An option is also possible with viral infection. In this case, both input devices suffer, both the keyboard and the mouse ()). Usually, the action of such “pests” excludes work in normal mode, when “safe mode” remains at your disposal. Using this type start Windows boot
You may encounter the problem that the USB keyboard does not work at boot: different situations: This often happens when reinstalling the system or when a menu appears with a choice safe mode and other download options Windows.
As a rule, this situation does not occur with a keyboard connected via the PS/2 port (and if it does occur, the problem should be looked for in the keyboard itself, the wire or the motherboard connector), but it may well occur on a laptop, since the built-in keyboard may also have USB interface.
Before continuing reading, check if everything is ok with the connection: is it in place? USB cable or wireless keyboard receiver, whether someone touched it. Even better, take it out and plug it in again, not in USB 3.0 (blue), but in USB 2.0 (Best in one of the ports on the back of the system unit. By the way, sometimes there is a special USB port with a keyboard and mouse icon).
Is USB keyboard support enabled in BIOS?
Most often, to solve the problem, just go to the BIOS computer and enable the initialization of the USB keyboard (set USB Keyboard Support or Legacy USB Support to Enabled) when you turn on the computer. If this option is disabled for you, you may not notice it for a long time (because Windows itself “connects” the keyboard at boot and everything works for you), until you need to use it at boot operating system.
It is possible that you cannot enter the BIOS, especially if you have new computer with UEFI or 8.1 and fast boot enabled. In this case, you can get to the settings in another way (Changing computer settings - Update and recovery - - Special boot options, then in additional parameters select entry into UEFI settings). And after that, see what can be changed to make everything work.
On some motherboards, setting up support USB devices input on boot is a little more sophisticated: for example, in my settings UEFI has three options - disabled initialization with ultra-fast boot, partial initialization and full initialization (fast boot must be disabled). And the wireless keyboard works at boot only in the latest version.
I hope the article was able to help you. And if not, describe in detail exactly how your problem arose and I will try to come up with something else and give advice in the comments.
Users usually notice when reinstalling the operating system, when it is necessary to set boot priority, or in case of a change additional settings primary input/output system. What is the reason for this phenomenon and how to deal with it will now be discussed. I would like to point out right away that not everything is so bad. There are several basic methods that can solve the problem within a few minutes. Let's look at them.
Keyboard does not work in BIOS: reasons
Many users pay attention to the fact that in a normally functioning operating system such situations, although observed, are very rare. For the most part, this applies to the BIOS.
Among the main reasons for this situation, most experts identify the following:
- physical damage to plugs and wires;
- incorrect connection;
- old computer without support for the connected device;
- Incorrect configuration of BIOS parameters.
Issues related to physical defects or damage will not be considered at this time. As a last resort, if the keyboard does not work in the BIOS, you can check the functionality of an external device of the PS/2 or USB standard quite simply by connecting it to another computer terminal. If everything is fine on it, you need to look for the reason in your system unit(more precisely, in the sockets and ports to which the connection is made).
What to do first?
As for troubleshooting, the first thing you should do is check that the connection is correct.
In the case of USB keyboards, it is quite difficult to make a connection through the corresponding port incorrectly (although sometimes it may be that the keyboard belongs to USB standard 3.0, and connects to USB port 2.0).
But most often, the occurrence of such a situation is more typical for keyboards of the old PS/2 standard. The connection must be made taking into account that the colors of the keyboard plug and the corresponding socket must match (they are purple). However, even in this case it is quite difficult to make a mistake.
How to enter BIOS (keyboard does not work)?
When trying the primary system, which can very often be the cause of failures, the question of access to them also arises, because in most cases it is impossible to do without a keyboard to call up the BIOS or navigate through the settings sections.
But there is a solution. For example, we have a situation where the keyboard on a laptop does not work in the BIOS. You can enter the settings system using several methods. Some laptop models are initially equipped with special buttons on the panel, with the help of which the BIOS settings section is called up. In particular, this applies to Lenovo products, Sony VAIO(ASSIST button), etc.
The second access option in the case when the keyboard does not work in the BIOS is to connect an external analogue via a USB port. But here you need to remember that it is advisable to connect the external keyboard without power, and only then turn on the device to boot.
Reset
The previous solutions can be called universal in a sense, however, they may not give the desired result. This can be observed when the USB keyboard does not work in the BIOS. This problem is only due to the fact that some kind of failure occurred in the system itself.
In this case, you should make full reset set parameters. Any, even an old desktop computer, allows you to get to the motherboard on which the CMOS battery is installed. You just need to pull it out of the slot for a few minutes, insert it back and try to enter the settings by turning on the terminal to boot.
Setting the correct parameters
But even here there are pitfalls. In case of USB keyboards The problem may be that support for such devices is deactivated in the primary system itself.
In this case, you will have to connect a PS/2 keyboard or, if possible, enter the BIOS on the laptop by pressing a special button, then find parameters like Legacy USB Support or USB Keyboard Support and look at the set value. If this is indeed the reason, it will be set to Disabled. You need to change it to Enabled and save the changes when you exit (F10, Y). A reboot will follow. Perhaps this is the only way to fix the problem.
What else could it be?
According to reviews, sometimes a keyboard failure may be associated with damage to the panels random access memory, disturbances in the operation of the power supply, short-circuiting of some contacts directly on motherboard, malfunction of ports, etc.. Here you cannot do without a complete diagnosis of the entire system.
Finally, there may also be a problem with the BIOS system itself, which consists of disruption of its operation or obsolescence. In this case, you will have to do a complete flashing, but this process is unsafe, and without special knowledge, an ordinary user can cause irreparable damage to the computer, as a result of which the PC will stop working altogether.
Instead of a total
Based on all of the above, we can conclude that, regardless of the current situation, not counting physical damage or defects, the problem of the keyboard not working and access to the primary system is solved quite simply.
But there can be many reasons for this phenomenon. And they are not always associated exclusively with physical defects. In most cases, for the same USB devices, it is enough to simply enable support or do a general reset. This helps 99 times out of 100.
Finally, if we talk about a global problem, when the keyboard does not work at all, you can determine it immediately on the welcome screen when you turn on the computer terminal (it will be reported that the keyboard is missing). In this case, you will either have to check the correct connection, or use the methods suggested above, including replacing the failed device with a new one.
The keyboard is the main tool for entering information, without which working on a computer is impossible. Most often, to this device It worked flawlessly, you just need to connect it to your computer, and it will install all the necessary drivers automatically. This happens in most cases, but not always. There are situations when, when you connect a keyboard to a USB or PS/2 connector, it is not detected on the computer and does not show any signs of operation - the indicators do not light up and the buttons do not work. In this article, we offer instructions on what to do if the keyboard on your computer does not work.
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Connecting the keyboard to the computer is as simple as possible - just insert its wire into the corresponding connector on the motherboard, and after that the device will start working. There are wireless keyboards, the radio receiver from which is inserted into the USB connector, after which the device works if the distance between the transmitter and the device is maintained.
Due to the simplicity of the process of connecting a computer, we can conclude that there are only 2 reasons why the keyboard does not work on the computer:
- Mechanical. There may be problems with the keyboard itself or the wire that connects it to the motherboard. The cause of the malfunction may also be a broken connector on the motherboard.
- Software. Keyboard drivers are installed automatically, but during the installation process any software Crashes can happen, and this situation is no exception. In addition, problems may occur not at the operating system level, but in the BIOS, where the appropriate settings for the keyboard are disabled.
Depending on which connector the keyboard is connected to the computer, we offer different options for solving problems that arise.
What to do if the keyboard does not work on the computer via USB protocol
The most common interface for connecting a keyboard to a computer is USB. The speed of information transfer from a peripheral device to the computer is sufficient, both via the USB 2.0 protocol and via USB 3.0, so there is no difference in which connector the keyboard is connected to.
If the USB keyboard does not work when you turn on the computer, you need to do the following:
It is worth noting that users whose keyboard is connected to the motherboard via USB may have problems entering the BIOS on the computer boot screen if using old version basic software. In this case, you need to find a keyboard with a PS/2 connector or use the appropriate adapter.
What to do if the keyboard does not work on your computer using the PS/2 protocol
Keyboard manufacturers are trying to move away from the PS/2 connector, abandoning it in favor of USB. It is very difficult to find a keyboard with a PS/2 connector on sale, but if you come across such a peripheral and it does not work with booting Windows, most likely the problem is related to the drivers. To make the keyboard work, you need to do the following:
It is worth noting that a similar problem with keyboards connected via the PS/2 protocol most often occurs due to an error when installing the i8042prt.sys or kbdclass.sys driver.
